102251143251 has 12 divisors (see below), whose sum is σ = 149565667680. Its totient is φ = 67304549520.

The previous prime is 102251143249. The next prime is 102251143259. The reversal of 102251143251 is 152341152201.

It is a happy number.

102251143251 is a `hidden beast` number, since 1 + 0 + 225 + 1 + 1 + 432 + 5 + 1 = 666.

It is not a de Polignac number, because 102251143251 - 2¹ = 102251143249 is a prime.

It is a super-2 number, since 2×102251143251² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102251143259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71905860 + ... + 71907281.

It is an arithmetic number, because the mean of its divisors is an integer number (12463805640).

Almost surely, 2^102251143251 is an apocalyptic number.

102251143251 is a deficient number, since it is larger than the sum of its proper divisors (47314524429).

102251143251 is a wasteful number, since it uses less digits than its factorization.

102251143251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143813226 (or 143813223 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 102251143251 its reverse (152341152201), we get a palindrome (254592295452).

It can be divided in two parts, 10225 and 1143251, that added together give a square (1153476 = 1074²).

The spelling of 102251143251 in words is "one hundred two billion, two hundred fifty-one million, one hundred forty-three thousand, two hundred fifty-one".